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Kang KC, Lee JH, Lee KY, Jang TS. Surgical Outcomes of Extensive Dome-Like Laminoplasty Using En Bloc Resection of C2 Inner Lamina for Patients With Severe Cord Compression Behind C2 Body. Clin Spine Surg 2024; 37:115-123. [PMID: 38637931 DOI: 10.1097/bsd.0000000000001610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 02/28/2024] [Indexed: 04/20/2024]
Abstract
STUDY DESIGN A retrospective, single-center study. OBJECTIVE The aim of this study is to evaluate the efficacy and safety of a newly developed extensive dome-like laminoplasty using en bloc resection of the C2 inner lamina in patients with severe cord compression behind the C2 body. SUMMARY OF BACKGROUND DATA A surgery for severe cord compression behind C2 body is challenging for spinal surgeons. To date, there has been no established solution for severe cord compression behind the C2 body. MATERIALS AND METHODS Patients with severe cord compression behind the C2 body who underwent posterior surgery consecutively were enrolled. Extensive dome-like laminoplasty that was newly developed was performed to remove en bloc removal of the C2 inner lamina were performed. Preoperative and postoperative canal diameters behind the C2 and mean removed area of the C2 inner lamina were measured using MRI and CT scan. Clinical and radiographic parameters were assessed preoperative and postoperative periods. In addition, perioperative complications were analyzed. RESULTS A total of 36 patients underwent extensive dome-like laminoplasty and their diagnoses were ossification of the posterior longitudinal ligament (OPLL, 66.7%) and congenital stenosis with spondylosis (33.3%). The mean canal diameter behind the C2 increased from 9.85 (2.28) mm preoperatively to 19.91 (3.93) mm at the last follow-up ( P <0.001). Clinically, neck and arm visual analog scale, Japanese Orthopaedic Association score, and neck disability index significantly improved at postoperative 1 month ( P <0.05), and the scores were maintained until the last follow-up. No meaningful radiographic changes occurred after the surgeries. During the procedures, there were no particular complications, but one patient showed deteriorated myelopathic symptoms and underwent additional C1-C2 decompressive surgery. CONCLUSIONS After extensive dome-like laminoplasty, surgical outcomes are satisfactory, and complications are rare. This technique may be a viable option for patients with severe cord compression behind the C2 body. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- Kyung-Chung Kang
- Department of Orthopaedic Surgery, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
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Park E, Jang TS, Kim JK. Evaluation of Physical Properties of Coated Polydioxanone Threads. Dermatol Surg 2024; 50:360-365. [PMID: 38318968 DOI: 10.1097/dss.0000000000004074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
BACKGROUND Using a thread for wound closure promotes healing and minimizes contamination by foreign substances. Threads have also been employed in esthetic surgery; however, functional threads that can improve wrinkles and rejuvenate the skin are required. OBJECTIVE To evaluate the suitability of polydioxanone threads coated with polyethylene glycol, hyaluronic acid, and amino acids for use in the medical field because such formulations are expected to promote regeneration and collagen synthesis. MATERIALS AND METHODS Physical properties (diameter [ n = 20], tensile strength [ n = 20], strength retention rate [ n = 10], and scanning electron microscopy images) and cytotoxicity (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide and lactate dehydrogenase assays) of polydioxanone threads coated with polyethylene glycol, hyaluronic acid, and amino acids were assessed and compared with those of uncoated polydioxanone threads. Analyses were performed using IBM SPSS Statistics (Statistical significance; p values <.05). RESULTS The size standards for tensile strength (≥63.5 N) and diameter (average 0.570-0.610 mm) were met. There were no differences in the physical properties of the coated and uncoated threads; however, the biocompatibility of coated threads was high owing to low cytotoxicity. CONCLUSION Threads coated with materials that can promote regeneration are suitable for use in the medical field.
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Affiliation(s)
- EunJi Park
- Department of Medical Laser, Graduate School of Medicine, Dankook University, Chungnam, South Korea
| | - Tae Su Jang
- Department of Health Administration, College of Health and Welfare, Dankook University, Chungnam, South Korea
| | - Jae Kyung Kim
- Department of Biomedical Laboratory Science, College of Health and Welfare, Dankook University, Chungnam, South Korea
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Yun SH, Jang TS, Kwon JW. Cortical activity and spatiotemporal parameters during gait termination and walking: A preliminary study. Behav Brain Res 2024; 456:114701. [PMID: 37813283 DOI: 10.1016/j.bbr.2023.114701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 10/06/2023] [Accepted: 10/06/2023] [Indexed: 10/11/2023]
Abstract
Gait termination requires an interaction between the biomechanical and neuromuscular systems to arrest forward momentum. Currently, the biomechanical characteristics of gait termination have been demonstrated; however, the neural mechanism of gait termination remains unclear. This study aimed to investigate cortical activity during gait termination using functional near-infrared spectroscopy (fNIRS). Thirteen healthy younger adults (mean age:24.0 ± 1.7) participated in this study. All participants performed three experimental sessions: planned gait termination (PGT), unplanned gait termination (UGT), and walking. Each experimental session comprised a block paradigm design (three cycles; 20 s resting, 45 s task). Cortical activity in the dorsolateral prefrontal cortex (DLPFC), supplementary motor area (SMA), and primary motor cortex (M1) and spatiotemporal parameters were measured. We compared the cortical activities and spatiotemporal parameters among PGT, UGT, and walking sessions. In addition, we performed Pearson correlations between hemodynamic responses and spatiotemporal parameters. The PGT was activated in the right DLPFC, whereas the UGT and walking were activated in the left SMA (p < 0.05). Comparing cortical activation between sessions, both the PGT and UGT showed significantly higher activation in the right DLPFC than during walking (p < 0.05). There were no significant differences in cortical activity between PGT and UGT (p > 0.05). In addition, the gait termination time revealed moderate positive correlation with hemodynamic responses in the right DLPFC (p < 0.05). Our results indicate that the right DLPFC is associated with gait termination, regardless of gait termination type. Our findings provide the potential implication that the hemodynamic response in the right DLPFC would be a biomarker to evaluate the ability of gait termination.
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Affiliation(s)
- Seong Ho Yun
- Department of Public Health Sciences, Graduate School, Dankook University, Cheonan, South Korea
| | - Tae Su Jang
- Department of Health Administration, College of Health and Welfare Sciences, Dankook University, Cheonan, South Korea
| | - Jung Won Kwon
- Department of Physical Therapy, College of Health and Welfare Sciences, Dankook University, Cheonan, South Korea.
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Lee Y, Jang TS, Kim JK. Effects of Coronavirus Disease 2019 on Prevalence of Acute Respiratory Viruses: Changes during the Pandemic. J Glob Infect Dis 2024; 16:27-32. [PMID: 38680753 PMCID: PMC11045149 DOI: 10.4103/jgid.jgid_155_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 12/15/2023] [Accepted: 01/10/2024] [Indexed: 05/01/2024] Open
Abstract
Introduction The coronavirus disease 2019 (COVID-19) pandemic may have influenced the prevalence and seasonality of acute respiratory viral infections. The aim of the study was to investigate the prevalence of all viruses causing acute viral respiratory infections before and after social distancing measures were lifted. Methods Cross-sectional study where outpatients and inpatients at Kyunghee University Hospital were examined. From January 2021 to December 2022, respiratory samples were analyzed using multiplex reverse transcriptase real-time polymerase chain reaction. Results Of 3953 samples obtained, 412 (10.42%) were positive for acute respiratory viral infection, and 502 viruses were detected. The number of viral infections increased from 184 in 2021 to 318 in 2022. Human metapneumovirus was detected from August to November 2022. Human bocavirus (HBoV) was frequently detected from April to June 2021; however, in 2022, HBoV was frequently detected from July to October. Human parainfluenza virus 3 was rarely detected after its initial frequent detection from October to December 2021 but was continuously observed after frequent detection in September 2022. Co-infection occurred in 78 (18.9%) cases. The most common combination of simultaneous infections was human rhinovirus-HBoV (n = 30, 38.5%). Conclusions During the COVID-19 pandemic, the incidence of acute respiratory viral infection decreased significantly but increased in 2022 when measures were lifted. The prevalence and seasonality of respiratory viral infections have changed since the pandemic. Our findings contribute to the prediction of an effective response to changes in the prevalence of respiratory viruses.
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Affiliation(s)
- Yonghee Lee
- Department of Biomedical Laboratory Science, Dankook University College of Health and Welfare, Cheonan-si, Chungnam, Republic of Korea
| | - Tae Su Jang
- Department of Health Administration, Dankook University College of Health and Welfare, Cheonan-si, Chungnam, Republic of Korea
| | - Jae Kyung Kim
- Department of Biomedical Laboratory Science, Dankook University College of Health and Welfare, Cheonan-si, Chungnam, Republic of Korea
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Yeo SS, Jang TS, Yun SH. Sensorimotor adaptation in spatial orientation task: a fNIRS study. Sci Rep 2023; 13:15160. [PMID: 37704674 PMCID: PMC10499899 DOI: 10.1038/s41598-023-42416-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 09/10/2023] [Indexed: 09/15/2023] Open
Abstract
In sensorimotor conflicts, the brain forms and updates a new sensorimotor relationship through sensorimotor integration. As humans adapt to new sensorimotor mapping, goal-directed movements become increasingly precise. Using functional near-infrared spectroscopy, we investigated the changes in cortical activity during sensorimotor adaptation in a spatial orientation task with sensorimotor conflict. Individuals performed a reversed spatial orientation training in which the visual feedback guiding hand movements was reversed. We measured cortical activity and spatial orientation performance, including the response time, completion number, error, and accuracy. The results revealed the continuous activation in the left SMG during sensorimotor adaptation and decreased activation in the right SAC, AG and SMG after sensorimotor adaptation. These findings indicated the contribution of the left SMG to sensorimotor adaptation and the improved efficiency of cortical activity after sensorimotor adaptation, respectively. Our studies suggest the neural mechanisms related to sensorimotor adaptation to a reversed spatial orientation task.
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Affiliation(s)
- Sang Seok Yeo
- Department of Physical Therapy, College of Health and Welfare Sciences, Dankook University, Cheonan, Chungcheongnam-do, Republic of Korea
| | - Tae Su Jang
- Department of Health Administration, College of Health and Welfare Sciences, Dankook University, Cheonan, Chungcheongnam-do, Republic of Korea
| | - Seong Ho Yun
- Department of Public Health Sciences, Graduate School, Dankook University, Cheonan, Chungcheongnam-do, Republic of Korea.
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Kang KC, Jang TS, Choi SH, Kim HW. Difference between Anterior and Posterior Cord Compression and Its Clinical Implication in Patients with Degenerative Cervical Myelopathy. J Clin Med 2023; 12:4111. [PMID: 37373804 DOI: 10.3390/jcm12124111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/12/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
In degenerative cervical myelopathy (DCM), the low anteroposterior compression ratio of the spinal cord is known to be associated with a neurologic deficit. However, there is little detailed analysis of spinal cord compression. Axial magnetic resonance images of 183 DCM patients at normal C2-C3 and maximal cord compression segments were analyzed. The anterior (A), posterior (P), and anteroposterior length and width (W) of the spinal cord were measured. Correlation analyses between radiographic parameters and each section of Japanese Orthopedic Association (JOA) scores and comparisons of the patients divided by A (below or above 0, 1, or 2 mm) were performed. Between C2-C3 and maximal compression segments, the mean differences of A and P were 2.0 (1.2) and 0.2 (0.8) mm. The mean anteroposterior compression ratios were 0.58 (0.13) at C2-C3 and 0.32 (0.17) at maximal compression. The A and A/W ratio were significantly correlated with four sections and the total JOA scores (p < 0.05), but the P and P/W ratio did not demonstrate any correlations. Patients with A < 1 mm had significantly lower JOA scores than those with A ≥ 1 mm. In patients with DCM, spinal cord compression occurs mainly in the anterior part and the anterior cord length of <1 mm is particularly associated with neurologic deficits.
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Affiliation(s)
- Kyung-Chung Kang
- Department of Orthopaedic Surgery, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Kyungheedae-ro 23, Dongdaemun-gu, Seoul 130-872, Republic of Korea
| | - Tae Su Jang
- Department of Orthopaedic Surgery, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Kyungheedae-ro 23, Dongdaemun-gu, Seoul 130-872, Republic of Korea
| | - Sun-Hwan Choi
- Department of Orthopaedic Surgery, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Kyungheedae-ro 23, Dongdaemun-gu, Seoul 130-872, Republic of Korea
| | - Hee-Won Kim
- Department of Orthopaedic Surgery, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Kyungheedae-ro 23, Dongdaemun-gu, Seoul 130-872, Republic of Korea
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Lee SJ, Jang TS, Kim JK. A retrospective study on the status of sexually transmitted co-infections in university hospitals in Korea from 2017 to 2021. Ther Adv Infect Dis 2023; 10:20499361231220154. [PMID: 38145192 PMCID: PMC10748651 DOI: 10.1177/20499361231220154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 11/27/2023] [Indexed: 12/26/2023] Open
Abstract
Background The prevalence of sexually transmitted infections (STIs) remains high worldwide. Despite the worldwide increase in the incidence of STIs every year, there are few reports on the frequency of STIs with different pathogens according to age and gender. Accordingly, a study was conducted to determine trends in co-infection with STIs by age and gender in Cheonan, South Korea from 2017 to 2021. Objectives To identify trends by age or sex in co-infection of STIs in this region. Design A retrospective study was conducted on clinical samples examined at Dankook University Hospital from January 2017 to November 2021. A total of 3297 specimens were collected from patients visiting Dankook University Hospital (Cheonan, Korea), and statistical analysis was performed on patients ranging in age from 1 day to 93 years. Methods Multiplex polymerase chain reaction, the most efficient method to diagnose a bacterial infection, was performed using an MJ Research PTC-200 Thermal Cycler (Marshall Scientific, Richmond, VA, USA) and a Seeplex STD Detection Kit (Seegene, Seoul, Republic of Korea). The co-infection rate with STI pathogens was analyzed according to age and sex. Results Of the 3297 clinical samples, 1017 (30.9%) tested positive for sexually transmitted pathogens, ranging from one to six co-infections. Analysis of the co-infection rate by age revealed that the average age gradually decreased as the total number of co-infection pathogens increased. The co-infection percentage and age distribution of STIs differed according to sex. Co-infection was more prevalent in female patients. Furthermore, co-infection in male patients occurred frequently in the 30-39-year-old group, while those in female patients occurred in the 20-29- and 30-39-year-old groups. Conclusion Our statistical analysis showed that STI co-infections were more common among younger than older people. Therefore, it helps in recognizing STIs at a young age and provides possible indicator data to prevent STIs at a young age. In addition, further research is needed on co-infection in other regions.
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Affiliation(s)
- Sun Jung Lee
- Department of Biomedical Laboratory Science, Dankook University College of Health Sciences, Chungnam, Republic of Korea
| | - Tae Su Jang
- Department of Health Administration, Dankook University College of Health Sciences, Chungnam, Republic of Korea
| | - Jae Kyung Kim
- Department of Biomedical Laboratory Science, Dankook University College of Health Sciences, 119, Dandae-ro, Dongnam-gu, Cheonan-si, Chungnam 31116, Republic of Korea
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Kang KC, Jang TS, Jung CH. Cervical Radiculopathy: Focus on Factors for Better Surgical Outcomes and Operative Techniques. Asian Spine J 2022; 16:995-1012. [PMID: 36599372 PMCID: PMC9827215 DOI: 10.31616/asj.2022.0445] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 12/15/2022] [Indexed: 12/31/2022] Open
Abstract
For patients with cervical radiculopathy, most studies have recommended conservative treatment as the first-line treatment; however, when conventional treatment fails, surgery is considered. A better understanding of the prognosis of cervical radiculopathy is essential to provide accurate information to the patients. If the patients complain of persistent and recurrent arm pain/numbness not respond to conservative treatment, or exhibit neurologic deficits, surgery is performed using anterior or posterior approaches. Anterior cervical discectomy and fusion (ACDF) has historically been widely used and has proven to be safe and effective. To improve surgical outcomes of ACDF surgery, many studies have been conducted on types of spacers, size/height/position of cages, anterior plating, patients' factors, surgical techniques, and so forth. Cervical disc replacement (CDR) is designed to reduce the incidence of adjacent segment disease during long-term follow-up by maintaining cervical spine motion postoperatively. Many studies on excellent indications for the CDR, proper type/size/shape/height of the implants, and surgical techniques were performed. Posterior cervical foraminotomy is a safe and effective surgical option to avoid complications associated with anterior approach and fusion surgery. Most recent literature demonstrated that all three surgical techniques for patients with cervical radiculopathy have clear advantages and disadvantages and reveal satisfactory surgical outcomes under a proper selection of patients and application of appropriate surgical methods. For this, it is important to fully understand the factors for better surgical outcomes and to adequately practice the operative techniques for patients with cervical radiculopathy.
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Affiliation(s)
- Kyung-Chung Kang
- Department of Orthopaedic Surgery, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Korea
| | - Tae Su Jang
- Department of Orthopaedic Surgery, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Korea,Corresponding author: Tae Su Jang Department of Orthopaedic Surgery, Kyung Hee University Medical Center, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea Tel: +82-2-958-8346, Fax: +82-2-964-3865, E-mail:
| | - Cheol Hyun Jung
- Department of Orthopaedic Surgery, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Korea
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Lee S, Choi YJ, Lee S, Kang KS, Jang TS, Kim KH. Protective Effects of Withagenin A Diglucoside from Indian Ginseng ( Withania somnifera) against Human Dermal Fibroblast Damaged by TNF-α Stimulation. Antioxidants (Basel) 2022; 11:2248. [PMID: 36421436 PMCID: PMC9686661 DOI: 10.3390/antiox11112248] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/31/2022] [Accepted: 11/10/2022] [Indexed: 10/29/2023] Open
Abstract
Human skin is constructed with many proteins such as collagen and elastin. Collagen and elastin play a key role in providing strength and elasticity to the human skin and body. However, damage to collagen causes various symptoms such as wrinkles and freckles, which suggests that they are important to maintain skin condition. Extrinsic or intrinsic skin aging produces an excess of skin destructive factors such as tumor necrosis factor (TNF)-α, which is a major mediator of the aging process. In aged skin, TNF-α provokes the generation of intracellular ROS (reactive oxygen species). It triggers the excessive secretion of MMP-1, which is a collagen-degrading enzyme that causes the collapse of skin collagen. Therefore, we aimed to search for a natural-product-derived candidate that inhibits the skin damage caused by TNF-α in human dermal fibroblasts. In this study, the protective effect of withagenin A diglucoside (WAD) identified from Withania somnifera against TNF-α-stimulated human dermal fibroblasts is investigated. W. somnifera (Solanaceae), well-known as 'ashwagandha', is an Ayurvedic medicinal plant useful for promoting health and longevity. Our experimental results reveal that WAD from W. somnifera suppresses the generation of intercellular ROS. Suppressing intracellular ROS generation inhibits MMP-1 secretion and the collapse of type 1 collagen. The effect of WAD is shown to depend on the inhibition of MAPK phosphorylation, Akt phosphorylation, c-Jun phosphorylation, COX-2 expression, and NF-κB phosphorylation. Further, WAD-depressed expression of the pro-inflammatory cytokines IL-6 and IL-8 triggers various inflammatory reactions in human skin. These findings suggest that WAD has protective effects against skin damage. Accordingly, our study provides experimental evidence that WAD can be a potential agent that can be applied in various industrial fields, such as cosmetics and pharmaceuticals related to skin aging.
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Affiliation(s)
- Sullim Lee
- Department of Life Science, College of Bio-Nano Technology, Gachon University, Seongnam 13120, Republic of Korea
| | - Yea Jung Choi
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Seulah Lee
- Department of Oriental Medicine Biotechnology, College of Life Sciences, Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Tae Su Jang
- Department of Health Administration, Dankook University, Cheonan 31116, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Lee SJ, Jang TS, Jeon JS, Kim JK. Coinfections with multiple sexually transmitted pathogens in Republic of Korea, 2018-2020. J Clin Lab Anal 2022; 36:e24682. [PMID: 36036770 PMCID: PMC9550954 DOI: 10.1002/jcla.24682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Sexually transmitted infections (STIs) can have serious consequences, and the global STI incidence remains high. However, there is little information on the frequency of STIs with multiple pathogens according to age. Accordingly, we conducted a study to determine the trends of coinfection with sexually transmitted pathogens according to age in the Republic of Korea from 2018 to 2020. METHODS From January 2018 to December 2020, 65,191 samples of swab, urine, and other types submitted for STI screening were obtained from U2Bio Co. Ltd. (Seoul, Republic of Korea). Multiplex polymerase chain reaction, a sensitive and rapid method for simultaneous detection of STIs caused by multiple different pathogens, was performed using an AccuPower STI4C-Plex Real-Time PCR kit, AccuPower STI8A-Plex Real-Time PCR kit, and AccuPower STI8B-Plex Real-Time PCR kit with an Exicycler 96 Real-Time Quantitative Thermal Block. RESULTS Of the 65,191 samples tested, 35,366 (54.3%) tested positive for one or more sexually transmitted pathogens. The prevalence of coinfections with two or more sexually transmitted pathogens was inversely proportional to age. Furthermore, the rates of coinfection with sexually transmitted pathogens and age distribution differed according to sex and the sexually transmitted pathogen type. CONCLUSION This study confirmed that a significant proportion of patients with STIs are coinfected with multiple pathogens. Public health managers could use these results to recognize and prevent STIs according to age.
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Affiliation(s)
- Sun Jung Lee
- Department of Biomedical Laboratory Science, Dankook University College of Health Sciences, Chungnam, Korea
| | - Tae Su Jang
- Department of Health Administration, Dankook University College of Health Sciences, Chungnam, Korea
| | - Jae-Sik Jeon
- Department of Biomedical Laboratory Science, Dankook University College of Health Sciences, Chungnam, Korea
| | - Jae Kyung Kim
- Department of Biomedical Laboratory Science, Dankook University College of Health Sciences, Chungnam, Korea
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Joung YH, Jang TS, Kim JK. Association among sentinel surveillance, meteorological factors, and infectious disease in Gwangju, Korea. Environ Sci Pollut Res Int 2022; 29:17561-17569. [PMID: 34669138 PMCID: PMC8527811 DOI: 10.1007/s11356-021-17085-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 10/13/2021] [Indexed: 05/13/2023]
Abstract
The outbreak of new infectious diseases is threatening human survival. Transmission of such diseases is determined by several factors, with climate being a very important factor. This study was conducted to assess the correlation between the occurrence of infectious diseases and climatic factors using data from the Sentinel Surveillance System and meteorological data from Gwangju, Jeollanam-do, Republic of Korea. The climate of Gwangju from June to September is humid, with this city having the highest average temperature, whereas that from December to February is cold and dry. Infection rates of Salmonella (temperature: r = 0.710**; relative humidity: r = 0.669**), E. coli (r = 0.617**; r = 0.626**), rotavirus (r = - 0.408**; r = - 0.618**), norovirus (r = - 0.463**; r = - 0.316**), influenza virus (r = - 0.726**; r = - 0.672**), coronavirus (r = - 0.684**; r = - 0.408**), and coxsackievirus (r = 0.654**; r = 0.548**) have been shown to have a high correlation with seasonal changes, specifically in these meteorological factors. Pathogens showing distinct seasonality in the occurrence of infection were observed, and there was a high correlation with the climate characteristics of Gwangju. In particular, viral diseases show strong seasonality, and further research on this matter is needed. Due to the current COVID-19 pandemic, quarantine and prevention have become important to block the spread of infectious diseases. For this purpose, studies that predict infectivity through various types of data related to infection are important.
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Affiliation(s)
- You Hyun Joung
- Department of Medical Laser, Dankook University Graduate School of Medicine, Cheonan-Si, Chungnam, Republic of Korea
| | - Tae Su Jang
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan-Si, Chungnam, Republic of Korea
| | - Jae Kyung Kim
- Department of Biomedical Laboratory Science, Dankook University College of Health Sciences, 119, Dandae-ro, Dongnam-gu, Cheonan-si, Chungnam, 31116, Republic of Korea.
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Lim DK, Jeon JS, Jang TS, Kim JK. Association between climatic factors and respiratory syncytial virus detection rates in Cheonan, Korea. Environ Sci Pollut Res Int 2022; 29:13315-13322. [PMID: 34585349 DOI: 10.1007/s11356-021-16546-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 09/10/2021] [Indexed: 06/13/2023]
Abstract
The use of big data may facilitate the recognition and interpretation of causal relationships between disease occurrence and climatic variables. This study examined the effects of various climatic variables on the seasonal epidemiology of respiratory syncytial virus (RSV) infections in the temperate climate of Korea. Trends in RSV detection were analyzed using 9010 samples tested between January 1, 2012, and December 31, 2018, at Dankook University Hospital in Cheonan, Korea. Seasonal patterns in RSV detection frequency were compared with local climatic variables during the same period. RSV detection rate of 12.8% (n = 1150/9010) was observed, which was higher for RSV-A (7.1%) than RSV-B (5.8%) and RSV-A and RSV-B alternated each year. Children < 1 year exhibited high infection rates with RSV-A (68.5%) and RSV-B (58.7%). RSV-A and RSV-B infection rates in children under 9 years old were 96.2% and 92.1%, respectively. RSV had a significant relationship with several climatic factors. Air temperature, wind chill temperature, and particulate matter concentration were lower on days with a higher frequency of RSV detection. In contrast, atmospheric pressure was higher on days with lower RSV detection. Although the detection rates for RSV-A and RSV-B increased on days with lower air temperatures, those for RSV-B also increased on days with lower wind chill temperatures. Our findings suggest that climatic variables affect the RSV detection rate among children under 10 years of age. The present data may help predict the time when prevention strategies may be the most effective.
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Affiliation(s)
- Dong Kyu Lim
- Department of Medical Laser, Dankook University Graduate School of Medicine, Cheonan-si, South Korea
| | - Jae-Sik Jeon
- Department of Biomedical Laboratory Science, College of Health Sciences, Dankook University, Cheonan-si, South Korea
| | - Tae Su Jang
- Department of Medicine, College of Medicine, Dankook University, Cheonan-si, South Korea
| | - Jae Kyung Kim
- Department of Biomedical Laboratory Science, College of Health Sciences, Dankook University, Cheonan-si, South Korea.
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Lee BS, Yoo MJ, Kang H, Lee SR, Kim S, Yu JS, Kim JC, Jang TS, Pang C, Kim KH. Withasomniferol D, a New Anti-Adipogenic Withanolide from the Roots of Ashwagandha ( Withania somnifera). Pharmaceuticals (Basel) 2021; 14:ph14101017. [PMID: 34681241 PMCID: PMC8537031 DOI: 10.3390/ph14101017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/24/2021] [Accepted: 09/30/2021] [Indexed: 12/30/2022] Open
Abstract
Withania somnifera (Solanaceae), well-known as 'Indian ginseng' or 'Ashwagandha', is a medicinal plant that is used in Ayurvedic practice to promote good health and longevity. As part of an ongoing investigation for bioactive natural products with novel structures, we performed a phytochemical examination of the roots of W. somnifera employed with liquid chromatography-mass spectrometry (LC/MS)-based analysis. The chemical analysis of the methanol extract of W. somnifera roots using repeated column chromatography and high-performance liquid chromatography under the guidance of an LC/MS-based analysis resulted in a new withanolide, withasomniferol D (1). The structure of the newly isolated compound was elucidated by spectroscopic methods, including one-dimensional (1D) and two-dimensional (2D) nuclear magnetic resonance (NMR) and high-resolution (HR) electrospray ionization (ESI) mass spectroscopy, and its absolute configuration was established by electronic circular dichroism (ECD) calculations. The anti-adipogenic activities of withasomniferol D (1) were evaluated using 3T3-L1 preadipocytes with Oil Red O staining and quantitative real-time polymerase chain reaction (qPCR). We found that withasomniferol D (1) inhibited adipogenesis and suppressed the enlargement of lipid droplets compared to the control. Additionally, the mRNA expression levels of adipocyte markers Fabp4 and Adipsin decreased noticeably following treatment with 25 μM of withasomniferol D (1). Taken together, these findings provide experimental evidence that withasomniferol D (1), isolated from W. somnifera, exhibits anti-adipogenic activity, supporting the potential application of this compound in the treatment of obesity and related metabolic diseases.
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Affiliation(s)
- Bum Soo Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea
| | - Min Jeong Yoo
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea
| | - Heesun Kang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea
| | - Seoung Rak Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea
| | - Sil Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea
| | - Jae Sik Yu
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea
| | - Jin-Chul Kim
- Natural Product Informatics Research Center, KIST Gangneung Institute of Natural Products, Gangneung 25451, Korea
| | - Tae Su Jang
- College of Medicine, Dankook University, Cheonan 31116, Korea
| | - Changhyun Pang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea
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14
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Lee D, Yu JS, Ryoo R, Kim JC, Jang TS, Kang KS, Kim KH. Pulveraven A from the fruiting bodies of Pulveroboletus ravenelii induces apoptosis in breast cancer cell via extrinsic apoptotic signaling pathway. J Antibiot (Tokyo) 2021; 74:752-757. [PMID: 34172938 DOI: 10.1038/s41429-021-00435-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 02/06/2023]
Abstract
Pulveroboletus ravenelii (Beck. et Curt.) Murr. (Boletaceae), commonly known as Ravenel's bolete, is an edible and medicinal mushroom, and is also used for preparing mushroom-based dyes. As part of a continuing project to discover the bioactive natural products from wild mushrooms, we analyzed the methanol (MeOH) extract of P. ravenelii to identify metabolites with the anticancer activity. Chemical analysis of the MeOH extract combined with liquid chromatography-mass spectrometry (LC-MS) analysis led to the isolation of a phenolic compound, pulveraven A (PA), whose chemical structure was determined using a combination of 1D and 2D NMR and LC-MS analysis. In the present study, we investigated the cytotoxicity and anticancer mechanisms of pulveraven A using human breast cancer (MCF-7) cells, and demonstrated that it reduced cell viability of MCF-7 cells below 50% (71.74 ± 3.61 μM). Annexin V Alexa Fluor 488 binding assay and western blot results revealed that pulveraven A induced apoptotic cell death via the extrinsic apoptosis pathway, as indicated by the activation of initiator caspase-8 and executioner caspase-7. Furthermore, it was accompanied by an increase in the Bax/Bcl-2 ratio. These results suggest that pulveraven A induces apoptosis in breast cancer cells via the extrinsic apoptotic signaling pathway.
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Affiliation(s)
- Dahae Lee
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Jae Sik Yu
- Natural Product Research Laboratory, School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Rhim Ryoo
- Special Forest Products Division, Forest Bioresources Department, National Institute of Forest Science, Suwon, Republic of Korea
| | - Jin-Chul Kim
- KIST Gangneung Institute of Natural Products, Natural Product Informatics Research Center, Gangneung, Republic of Korea
| | - Tae Su Jang
- Department of Medicine, Dankook University, Cheonan, Chungnam, Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea.
| | - Ki Hyun Kim
- Natural Product Research Laboratory, School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea.
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Oh EJ, Jang TS, Kim JK. Mycoplasma genitalium and Mycoplasma hominis infection in south Korea during 2018-2020. Iran J Microbiol 2021; 13:602-607. [PMID: 34900157 PMCID: PMC8629812 DOI: 10.18502/ijm.v13i5.7423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
BACKGROUND AND OBJECTIVES Sexually transmitted infections (STIs) can remain undetected and untreated; therefore, rapid diagnosis and treatment of STIs are important. Mycoplasma genitalium (MG), Mycoplasma hominis (MH), and Ureaplasma urealyticum are sexually transmitted pathogens that cause asymptomatic, organ-specific, and chronic infections, thereby posing a threat to community health. Therefore, we investigated the epidemiological trends of MG and MH infections in South Korea for rapid diagnosis and treatment. MATERIALS AND METHODS From September 2018 to December 2020, samples (catheter, pus, tissue, swab, and urine) were collected from outpatients of hospitals in South Korea for molecular biological venereal disease testing. DNA was extracted and analyzed using real-time polymerase chain reaction. RESULTS Of the 59,381 samples analyzed, 8.78% (n=5,215) were positive for MG and MH. The MH positivity rate (5.51%, n=3,273) was higher than the MG positivity rate (3.27%, n=1,942). MG and MH positivity rates were the highest in patients aged <19 years. Men had higher MG positivity rate, whereas women had higher MH positivity rates. Furthermore, the MG-positivity rate was the highest in the swab samples of both men and women, whereas that of MH was the highest in the urine samples of men and swab samples of women. CONCLUSION We identified the differences between MG and MH positivity rates based on sex, specimen, and age. Our findings can provide information for strategies that protect public health and reduce STI incidence and transmission.
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Affiliation(s)
- Eun Ju Oh
- Departmentof Medical Laser, School of Medicine, Dankook University Graduate, Chungnam, South Korea
| | - Tae Su Jang
- Department of Preventive Medicine, Dankook University College of Medicine, Chungnam, South Korea
| | - Jae Kyung Kim
- Departmentof Biomedical Laboratory Science, Dankook University College of Health Sciences, Chungnam, South Korea
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16
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Lee D, Kim KH, Jang TS, Kang KS. Identification of bioactive compounds from mulberry enhancing glucose-stimulated insulin secretion. Bioorg Med Chem Lett 2021; 43:128096. [PMID: 33984475 DOI: 10.1016/j.bmcl.2021.128096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/29/2021] [Accepted: 05/05/2021] [Indexed: 10/21/2022]
Abstract
Previously, we isolated six heterocyclic compounds (1-6) from the fruits of mulberry trees (Morus alba L.) and determined that loliolide affords rat pancreatic islet β-cell (INS-1) protection against streptozotocin‑induced cytotoxicity. In the present study, we further investigated the effect of the six heterocyclic compounds (1-6) on glucose-stimulated insulin secretion (GSIS) in INS-1 cells. Among them, (R)‑5‑hydroxypyrrolidin‑2‑one(1) and indole (6) increased GSIS without inducing cytotoxicity. Additionally, compounds 1 and 6 enhanced the phosphorylation of total insulin receptor substrate-2, phosphatidylinositol 3-kinase, and Akt, and activated pancreatic and duodenal homeobox-1, which play a crucial role in β-cell functions related to insulin secretion. Collectively, these findings indicate that (R)‑5‑hydroxypyrrolidin‑2‑one(1) and indole (6), isolated from M. alba fruits, may be beneficial in managing type 2 diabetes.
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Affiliation(s)
- Dahae Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Tae Su Jang
- Department of Medicine, Dankook University, Cheonan, Chungnam 31116, Republic of Korea.
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea.
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17
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Lee YH, Jang HJ, Park KH, Kim SH, Kim JK, Kim JC, Jang TS, Kim KH. Phytochemical Analysis of the Fruits of Sea Buckthorn ( Hippophae rhamnoides): Identification of Organic Acid Derivatives. Plants (Basel) 2021; 10:plants10050860. [PMID: 33923257 PMCID: PMC8146194 DOI: 10.3390/plants10050860] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 04/21/2021] [Accepted: 04/23/2021] [Indexed: 12/01/2022]
Abstract
Hippophae rhamnoides L. (Elaeagnaceae), commonly known as “Sea buckthorn” and “Vitamin tree”, is a spiny deciduous shrub whose fruit is known for its nutritional composition, such as vitamin C, and is consumed as a dietary supplement worldwide. As part of our ongoing efforts to identify structurally new and bioactive constituents from natural resources, the phytochemical investigation of the extract of H. rhamnoides fruits led to the isolation of one malate derivative (1), five citrate derivatives (2–6), and one quinate derivative (7). The structures of the isolated compounds were elucidated by analysis of 1D and 2D nuclear magnetic resonance (NMR) spectroscopic data and high-resolution electrospray ionization (HR-ESI) liquid chromatography–mass spectrometry (LC/MS) data. Three of the citrate derivatives were identified as new compounds: (S)-1-butyl-5-methyl citrate (3), (S)-1-butyl-1′-methyl citrate (4), and (S)-1-methyl-1′-butyl citrate (6), which turned out to be isolation artifacts. The absolute configurations of the new compounds were established by quantum chemical electronic circular dichroism (ECD) calculation, which is an informative tool for verifying the absolute configuration of organic acid derivatives. The isolated compounds 1–7 were evaluated for their stimulatory effects on osteogenesis. Compounds 1, 3, 4, 6, and 7 stimulated osteogenic differentiation up to 1.4 fold, compared to the negative control. These findings provide experimental evidence that active compounds 1, 3, 4, 6, and 7 induce the osteogenesis of mesenchymal stem cells and activate bone formation.
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Affiliation(s)
- Yong Hoon Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea; (Y.H.L.); (H.J.J.)
| | - Hee Joo Jang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea; (Y.H.L.); (H.J.J.)
| | - Kun Hee Park
- Department of Food Science and Biotechnology, Sungkyunkwan University, Suwon 16419, Korea;
| | | | - Jung Kyu Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea;
| | - Jin-Chul Kim
- Natural Product Informatics Research Center, KIST Gangneung Institute of Natural Products, Gangneung 25451, Korea;
| | - Tae Su Jang
- College of Medicine, Dankook University, Cheonan 31116, Korea
- Correspondence: (T.S.J.); (K.H.K.); Tel.: +82-41-550-1476 (T.S.J.); +82-31-290-7700 (K.H.K.)
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea; (Y.H.L.); (H.J.J.)
- Correspondence: (T.S.J.); (K.H.K.); Tel.: +82-41-550-1476 (T.S.J.); +82-31-290-7700 (K.H.K.)
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18
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Park YJ, Jeon MS, Lee S, Kim JK, Jang TS, Chung KH, Kim KH. Anti-fibrotic effects of brevilin A in hepatic fibrosis via inhibiting the STAT3 signaling pathway. Bioorg Med Chem Lett 2021; 41:127989. [PMID: 33794317 DOI: 10.1016/j.bmcl.2021.127989] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 03/14/2021] [Accepted: 03/20/2021] [Indexed: 12/15/2022]
Abstract
Hepatic fibrosis is a chronic liver disease characterized by the accumulation of extracellular matrix (ECM). Activation of hepatic stellate cells (HSCs) after repetitive liver damage is a key event in hepatic fibrogenesis. As part of ongoing research projects to identify pharmacologically effective natural products, the phytochemical investigation of a MeOH extract of Centipeda minima led to the isolation of a sesquiterpene lactone, brevilin A, which was explored to elucidate potential anti-fibrotic effects by reversing HSC activation. First, we observed that transforming growth factor (TGF)-β1 treatment significantly increased the expression levels of HSC activation marker, α-smooth muscle actin (α-SMA), and ECM protein such as collagen and fibronectin. Then, we demonstrated that brevilin A reversed the TGF-β1-induced increase in protein and mRNA expression levels of α-SMA and collagen. To investigate the underlying molecular mechanism of brevilin A, we evaluated the effects of brevilin A on the STAT3 signaling pathway. STAT3 phosphorylation, increased by TGF-β1 treatment, was strongly inhibited by brevilin A; the expression levels of fibronectin and connective tissue growth factor were also significantly decreased by brevilin A. The present study indicated that brevilin A has a preventive and therapeutic potential against hepatic fibrosis.
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Affiliation(s)
- Yong Joo Park
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea; College of Pharmacy, Kyungsung University, Busan 48434, Republic of Korea
| | - Mi Seon Jeon
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Seulah Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea; Division of Life Sciences, Korea Polar Research Institute, KIOST, Incheon 21990, Republic of Korea
| | - Jung Kyu Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Tae Su Jang
- Department of Medicine, Dankook University, Cheonan, Chungnam 31116, Republic of Korea
| | - Kyu Hyuck Chung
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea.
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Lee D, Alishir A, Jang TS, Kim KH. Identification of Bioactive Natural Product from the Stems and Stem Barks of Cornus walteri: Benzyl Salicylate Shows Potential Anti-Inflammatory Activity in Lipopolysaccharide-Stimulated RAW 264.7 Macrophages. Pharmaceutics 2021; 13:443. [PMID: 33805999 PMCID: PMC8064495 DOI: 10.3390/pharmaceutics13040443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 11/22/2022] Open
Abstract
Cornus walteri (Cornaceae), known as Walter's dogwood, has been used to treat dermatologic inflammation and diarrheal disease in traditional oriental medicine. As part of an ongoing research project to discover natural products with biological activities, the anti-inflammatory potential of compounds from C. walteri in lipopolysaccharide (LPS)-stimulated mouse RAW 264.7 macrophages were explored. Phytochemical analysis of the methanol extract of the stem and stem bark of C. walteri led to the isolation of 15 chemical constituents. These compounds were evaluated for their inhibitory effects on the production of the proinflammatory mediator nitric oxide (NO) in LPS-stimulated macrophages, as measured by NO assays. The molecular mechanisms underlying the anti-inflammatory activity were investigated using western blotting. Our results demonstrated that among 15 chemical constituents, lupeol and benzyl salicylate inhibited NO production in LPS-activated RAW 264.7 macrophages. Benzyl salicylate was more efficient than NG-monomethyl-L-arginine mono-acetate salt (L-NMMA) in terms of its inhibitory effect. In addition, the mechanism of action of benzyl salicylate consisted of the inhibition of phosphorylation of IκB kinase alpha (IKKα), IκB kinase beta (IKKβ), inhibitor of kappa B alpha (IκBα), and nuclear factor kappa B (NF-κB) in LPS-stimulated macrophages. Furthermore, benzyl salicylate inhibited the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). Taken together, these results suggest that benzyl salicylate present in the stem and stem bark of C. walteri has potential anti-inflammatory activity, supporting the potential application of this compound in the treatment of inflammatory diseases.
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Affiliation(s)
- Dahae Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea;
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea;
| | - Akida Alishir
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea;
| | - Tae Su Jang
- College of Medicine, Dankook University, Cheonan 31116, Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea;
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20
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Alishir A, Yu JS, Park M, Kim JC, Pang C, Kim JK, Jang TS, Jung WH, Kim KH. Ulmusakidian, a new coumarin glycoside and antifungal phenolic compounds from the root bark of Ulmus davidiana var. japonica. Bioorg Med Chem Lett 2021; 36:127828. [PMID: 33508466 DOI: 10.1016/j.bmcl.2021.127828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/30/2020] [Accepted: 01/19/2021] [Indexed: 11/26/2022]
Abstract
Bioactivity-driven LC/MS-based phytochemical analysis of the root bark extract of Ulmus davidiana var. japonica led to the isolation of 10 compounds including a new coumarin glycoside derivative, ulmusakidian (1). The structure of the new compound was elucidated using extensive spectroscopic analyses via 1D and 2D NMR spectroscopic data interpretations, HR-ESIMS, and chemical transformation. The isolated compounds 1-10 were tested for their antifungal activity against human fungal pathogens Cryptococcus neoformans and Candida albicans. Compounds 9 and 10 showed antifungal activity against C. neoformans, with the lowest minimal inhibitory concentration (MIC) of 12.5-25.0 µg/mL, whereas none of the compounds showed antifungal activity against C. albicans.
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Affiliation(s)
- Akida Alishir
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Jae Sik Yu
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Minji Park
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Gyeonggi-do 17546, Republic of Korea
| | - Jin-Chul Kim
- KIST Gangneung Institute of Natural Products, Natural Product Informatics Research Center, Gangneung 25451, Republic of Korea
| | - Changhyun Pang
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Jung Kyu Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Tae Su Jang
- Department of Medicine, Dankook University, Cheonan, Chungnam 31116, Republic of Korea
| | - Won Hee Jung
- Department of Systems Biotechnology, Chung-Ang University, Anseong, Gyeonggi-do 17546, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea.
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21
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Yoon SY, Yu JS, Hwang JY, So HM, Seo SO, Kim JK, Jang TS, Chung SJ, Kim KH. Phloridzin Acts as an Inhibitor of Protein-Tyrosine Phosphatase MEG2 Relevant to Insulin Resistance. Molecules 2021; 26:molecules26061612. [PMID: 33799458 PMCID: PMC7998658 DOI: 10.3390/molecules26061612] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/06/2021] [Accepted: 03/07/2021] [Indexed: 11/16/2022] Open
Abstract
Inhibition of the megakaryocyte protein tyrosine phosphatase 2 (PTP-MEG2, also named PTPN9) activity has been shown to be a potential therapeutic strategy for the treatment of type 2 diabetes. Previously, we reported that PTP-MEG2 knockdown enhances adenosine monophosphate activated protein kinase (AMPK) phosphorylation, suggesting that PTP-MEG2 may be a potential antidiabetic target. In this study, we found that phloridzin, isolated from Ulmus davidiana var. japonica, inhibits the catalytic activity of PTP-MEG2 (half-inhibitory concentration, IC50 = 32 ± 1.06 μM) in vitro, indicating that it could be a potential antidiabetic drug candidate. Importantly, phloridzin stimulated glucose uptake by differentiated 3T3-L1 adipocytes and C2C12 muscle cells compared to that by the control cells. Moreover, phloridzin led to the enhanced phosphorylation of AMPK and Akt relevant to increased insulin sensitivity. Importantly, phloridzin attenuated palmitate-induced insulin resistance in C2C12 muscle cells. We also found that phloridzin did not accelerate adipocyte differentiation, suggesting that phloridzin improves insulin sensitivity without significant lipid accumulation. Taken together, our results demonstrate that phloridzin, an inhibitor of PTP-MEG2, stimulates glucose uptake through the activation of both AMPK and Akt signaling pathways. These results strongly suggest that phloridzin could be used as a potential therapeutic candidate for the treatment of type 2 diabetes.
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Affiliation(s)
- Sun-Young Yoon
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea; (S.-Y.Y.); (J.S.Y.); (J.Y.H.); (H.M.S.); (S.O.S.)
- Department of Cosmetic Science, Kwangju Women’s University, Gwangju 62396, Korea
| | - Jae Sik Yu
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea; (S.-Y.Y.); (J.S.Y.); (J.Y.H.); (H.M.S.); (S.O.S.)
| | - Ji Young Hwang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea; (S.-Y.Y.); (J.S.Y.); (J.Y.H.); (H.M.S.); (S.O.S.)
| | - Hae Min So
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea; (S.-Y.Y.); (J.S.Y.); (J.Y.H.); (H.M.S.); (S.O.S.)
| | - Seung Oh Seo
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea; (S.-Y.Y.); (J.S.Y.); (J.Y.H.); (H.M.S.); (S.O.S.)
| | - Jung Kyu Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea;
| | - Tae Su Jang
- Department of Medicine, Dankook University, Cheonan, Chungnam 31116, Korea;
| | - Sang J. Chung
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea; (S.-Y.Y.); (J.S.Y.); (J.Y.H.); (H.M.S.); (S.O.S.)
- Correspondence: (S.J.C.); (K.H.K.); Tel.: +82-31-290-7703 (S.J.C.); +82-31-290-7700 (K.H.K.)
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea; (S.-Y.Y.); (J.S.Y.); (J.Y.H.); (H.M.S.); (S.O.S.)
- Correspondence: (S.J.C.); (K.H.K.); Tel.: +82-31-290-7703 (S.J.C.); +82-31-290-7700 (K.H.K.)
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Yu JS, Roh HS, Baek KH, Lee S, Kim S, So HM, Moon E, Pang C, Jang TS, Kim KH. Bioactivity-guided isolation of ginsenosides from Korean Red Ginseng with cytotoxic activity against human lung adenocarcinoma cells. J Ginseng Res 2018; 42:562-570. [PMID: 30337817 PMCID: PMC6190500 DOI: 10.1016/j.jgr.2018.02.004] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 01/31/2018] [Accepted: 02/08/2018] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Lung cancer is the leading cause of cancer-related death worldwide. In this study, we used a bioactivity-guided isolation technique to identify constituents of Korean Red Ginseng (KRG) with antiproliferative activity against human lung adenocarcinoma cells. METHODS Bioactivity-guided fractionation and preparative/semipreparative HPLC purification were used with LC/MS analysis to separate the bioactive constituents. Cell viability and apoptosis in human lung cancer cell lines (A549, H1264, H1299, and Calu-6) after treatment with KRG extract fractions and constituents thereof were assessed using the water-soluble tetrazolium salt (WST-1) assay and terminal deoxyribonucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) staining, respectively. Caspase activation was assessed by detecting its surrogate marker, cleaved poly adenosine diphosphate (ADP-ribose) polymerase, using an immunoblot assay. The expression and subcellular localization of apoptosis-inducing factor were assessed using immunoblotting and immunofluorescence, respectively. RESULTS AND CONCLUSION Bioactivity-guided fractionation of the KRG extract revealed that its ethyl acetate-soluble fraction exerts significant cytotoxic activity against all human lung cancer cell lines tested by inducing apoptosis. Chemical investigation of the ethyl acetatesoluble fraction led to the isolation of six ginsenosides, including ginsenoside Rb1 (1), ginsenoside Rb2 (2), ginsenoside Rc (3), ginsenoside Rd (4), ginsenoside Rg1 (5), and ginsenoside Rg3 (6). Among the isolated ginsenosides, ginsenoside Rg3 exhibited the most cytotoxic activity against all human lung cancer cell lines examined, with IC50 values ranging from 161.1 μM to 264.6 μM. The cytotoxicity of ginsenoside Rg3 was found to be mediated by induction of apoptosis in a caspase-independent manner. These findings provide experimental evidence for a novel biological activity of ginsenoside Rg3 against human lung cancer cells.
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Affiliation(s)
- Jae Sik Yu
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Hyun-Soo Roh
- Department of Molecular and Cellular Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - Kwan-Hyuck Baek
- Department of Molecular and Cellular Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - Seul Lee
- Department of Molecular and Cellular Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - Sil Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Hae Min So
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Eunjung Moon
- Charmzone R&D Center, Charmzone Co. LTD., Seoul, Republic of Korea
| | - Changhyun Pang
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Tae Su Jang
- Institute of Green Bio Science & Technology, Seoul National University, Pyeong Chang, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
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Lee TK, Park JY, Yu JS, Jang TS, Oh ST, Pang C, Ko YJ, Kang KS, Kim KH. 7α,15-Dihydroxydehydroabietic acid from Pinus koraiensis inhibits the promotion of angiogenesis through downregulation of VEGF, p-Akt and p-ERK in HUVECs. Bioorg Med Chem Lett 2018; 28:1084-1089. [DOI: 10.1016/j.bmcl.2018.02.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 01/31/2018] [Accepted: 02/08/2018] [Indexed: 11/28/2022]
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Jung EB, Trinh TA, Lee TK, Yamabe N, Kang KS, Song JH, Choi S, Lee S, Jang TS, Kim KH, Hwang GS. Curcuzedoalide contributes to the cytotoxicity of Curcuma zedoaria rhizomes against human gastric cancer AGS cells through induction of apoptosis. J Ethnopharmacol 2018; 213:48-55. [PMID: 29102767 DOI: 10.1016/j.jep.2017.10.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 10/27/2017] [Accepted: 10/29/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Curcuma zedoaria Roscoe (Zingiberaceae), also known as white turmeric or zedoaria, has been used in Ayurveda and traditional Chinese medicine to treat various cancers, and it possesses several sesquiterpenoid compounds. OBJECTIVE This study aimed to evaluate the therapeutic effects of a methanolic (MeOH) extract of C. zedoaria rhizomes, as well as its active constituents, against gastric cancer, which is a frequently diagnosed cancer in South Korea. MATERIALS AND METHODS Repeated column chromatography, together with semi-preparative HPLC purification, was used to separate the bioactive constituents from the C. zedoaria MeOH extract. The cytotoxic effects of the C. zedoaria MeOH extract and its active compounds were measured in human gastric cancer AGS cells. Expression of proteins related to apoptosis was evaluated using Western blotting analysis. RESULTS The MeOH extract of C. zedoaria rhizomes exerted a cytotoxic effect on AGS cells (IC50: 96.60 ± 4.87μg/mL). Based on the bioactivity-guided fractionation for antiproliferative activity, a chemical investigation of the MeOH extract led to the isolation of five sesquiterpenes including isoprocurcumenol (1), germacrone (2), curzerenone (3), curcumenol (4), and curcuzedoalide (5). Among these, curcuzedoalide demonstrated the strongest effect in suppressing gastric cancer cell proliferation in a dose-dependent manner with an IC50 value of 125.11±2.77μM. Western blotting analysis showed that curcuzedoalide inhibited AGS human gastric cancer cell viability by activating caspase-8, caspase-9, caspase-3, and PARP, which contributed to apoptotic cell death in AGS human gastric cancer cells. CONCLUSION These data indicate that curcuzedoalide contributed to the cytotoxicity of C. zedoaria by activating the cleavage of caspases and PARP, which are representative markers for apoptosis. Therefore, curcuzedoalide is a positive candidate for the development of novel chemotherapeutics.
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Affiliation(s)
- Eun Bee Jung
- College of Korean Medicine, Gachon University, Seongnam 13120, South Korea.
| | - Tuy An Trinh
- College of Korean Medicine, Gachon University, Seongnam 13120, South Korea.
| | - Tae Kyoung Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, South Korea.
| | - Noriko Yamabe
- College of Korean Medicine, Gachon University, Seongnam 13120, South Korea.
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, South Korea.
| | - Ji Hoon Song
- Department of Medicine, University of Ulsan College of Medicine, Seoul 05505, South Korea.
| | - Sungyoul Choi
- College of Korean Medicine, Gachon University, Seongnam 13120, South Korea.
| | - Sanghyun Lee
- Department of Integrative Plant Science, Chung-Ang University, Anseong 17546, South Korea.
| | - Tae Su Jang
- Institute of Green Bio Science & Technology, Seoul National University, Pyeong Chang 232-916, South Korea.
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, South Korea.
| | - Gwi Seo Hwang
- College of Korean Medicine, Gachon University, Seongnam 13120, South Korea.
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Song JH, Lee D, Lee SR, Yu JS, Jang TS, Nam JW, Kim KH, Kang KS. Identification of bioactive heterocyclic compounds from mulberry and their protective effect against streptozotocin-induced apoptosis in INS-1 cells. Mol Med Rep 2018; 17:5982-5987. [PMID: 29436651 DOI: 10.3892/mmr.2018.8582] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 01/15/2018] [Indexed: 11/05/2022] Open
Abstract
A phytochemical investigation of the MeOH extracts from mulberries (the fruit of Morus alba L.) led to the identification of six heterocyclic compounds (1‑6). These compounds were screened to detect whether they protected pancreatic INS‑1 cells from streptozotocin (STZ)‑induced cytotoxicity. Compound 3 was the most effective at preventing STZ‑induced cytotoxicity and the production of reactive oxygen species (ROS) in INS‑1 cells. In addition, compound 3 effectively prevented apoptosis induced by STZ in INS‑1 cells. Compound 3 also prevented STZ‑mediated cleavage of caspase‑8, caspase‑3 and poly (ADP‑ribose) polymerase and increased the expression of B‑cell lymphoma‑2 (Bcl‑2), an anti‑apoptotic Bcl‑2 family protein. In conclusion, the results of the present study indicate that compound 3 extracted from the fruit of M. alba was highly effective in preventing type 1 diabetes mellitus and may be a novel treatment option.
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Affiliation(s)
- Ji Hoon Song
- Department of Medicine, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Dahae Lee
- College of Korean Medicine, Gacheon University, Seongnam, Gyeonggi 13120, Republic of Korea
| | - Seoung Rak Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi 16419, Republic of Korea
| | - Jae Sik Yu
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi 16419, Republic of Korea
| | - Tae Su Jang
- Institute of Green Bio Science and Technology, Seoul National University, Pyeongchang, Gangwon 25354, Republic of Korea
| | - Joo-Won Nam
- College of Pharmacy, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi 16419, Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gacheon University, Seongnam, Gyeonggi 13120, Republic of Korea
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Lee S, Lee D, Park JY, Seok S, Jang TS, Park HB, Shim SH, Kang KS, Kim KH. Antigastritis effects of Armillariella tabescens (Scop.) Sing. and the identification of its anti-inflammatory metabolites. J Pharm Pharmacol 2018; 70:404-412. [DOI: 10.1111/jphp.12871] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 11/25/2017] [Indexed: 01/09/2023]
Abstract
Abstract
Objectives
This study demonstrates the biological and chemical analysis of the mushroom Armillariella tabescens (Scop.) Sing. (Tricholomataceae).
Methods
Chemical structures of the isolates were determined by 1D and 2D NMR, and ESI-MS, as well as comparison with previously reported data. All isolates were tested for anti-inflammatory effects based on their ability to inhibit LPS-stimulated nitric oxide (NO) production in RAW264.7 cells.
Key findings
We found that the MeOH extract of the fruiting bodies of A. tabescens showed antigastritis activity against ethanol-induced gastric damage in rats and notably reduced the gastric damage index compared to control in a concentration-dependent manner. Chemical investigation of the MeOH extract led to the isolation of four steroids (1–4), three alkaloids (5–7), two nucleic acids (8–9) and four fatty acids (10–13). This is the first study to report the identification of all isolates, except for compound 7, from A. tabescens. Compounds 1, 2, 3, 4 and 10 showed inhibition on LPS-stimulated NO production. Treatment with compound 10 inhibited expression of iNOS, COX-2, phospho-IKKα, IKKα, phospho-IκBα, IκBα and NF-kappa B in LPS-stimulated RAW264.7 cells.
Conclusions
Compound 10 likely contributes to the health benefits of A. tabescens as an antigastritis agent through its anti-inflammatory effects.
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Affiliation(s)
- Seulah Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Dahae Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
- College of Korean Medicine, Gachon University, Seongnam, Korea
| | - Jun Yeon Park
- College of Korean Medicine, Gachon University, Seongnam, Korea
| | - Soonja Seok
- Agricultural Microbiology Division, National Institute of Agricultural Sciences, RDA, Iseo-myeon, Wanju-gun, Jeollabuk-do, Korea
| | - Tae Su Jang
- Institute of Green Bio Science & Technology, Seoul National University, Pyeong Chang, Korea
| | - Hyun Bong Park
- Department of Chemistry, Yale University, New Haven, CT, USA
| | - Sang Hee Shim
- College of Pharmacy, Duksung Women's University, Dobong-gu, Seoul, Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam, Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
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Lee S, Lee D, Baek J, Jung EB, Baek JY, Lee IK, Jang TS, Kang KS, Kim KH. In vitro assessment of selected Korean plants for antioxidant and antiacetylcholinesterase activities. Pharm Biol 2017; 55:2205-2210. [PMID: 29115888 PMCID: PMC6130751 DOI: 10.1080/13880209.2017.1397179] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 10/13/2017] [Indexed: 05/05/2023]
Abstract
CONTEXT Antiacetylcholinesterase (AChE) drugs have been a main therapeutic treatment for Alzheimer's disease because increased AChE levels play a key role in reducing neurotransmission. OBJECTIVES Extracts from 35 Korean plants were selected and screened for antioxidant and anti-cholinesterase activity to explore new sources derived from Korean natural resources that could be used as AD therapeutic agents. MATERIALS AND METHODS The antioxidant effect of extracts from 35 selected Korean plants was determined using two most common free radical scavenging assays using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS). Additionally, the effect of extracts, identified as antioxidants, on acetylcholinesterase inhibition was assessed by an acetylcholinesterase assay kit. RESULTS Out of 36 extracts of 35 plants tested, Oenothera biennis L. (9.09 μg/mL), Saururus chinensis (Lour.) Baill. (9.52 μg/mL) and Betula platyphylla var. japonica (9.85 μg/mL) showed strong DPPH scavenging activity. Twelve other extracts also exerted moderate free radical scavenging activities with IC50 values ranging from 10 to 50 μg/mL. Antioxidant capacity detected by ABTS assay was only significant in O. biennis (23.40 μg/mL), while the other extracts were weak or unable to reduce the production of ABTS. Based on the antioxidant activities of these plant extracts, 19 extracts with IC50 values less than 100 μg/mL in DPPH assay were selected for further AChE inhibition assay. Among the extracts tested, the IC50 value for Prunella vulgaris var. lilacina NAKAI (18.83 μg/mL) in AChE inhibitory activity was the lowest, followed by O. biennis (20.09 μg/mL) and Pharbitis nil Chosy (22.79 μg/mL). CONCLUSIONS Considering complex multifactorial etiology of AD, the extracts of P. vulgaris var. lilacina (aerial part), O. biennis (seed) and P. nil (seed) may be safe and ideal candidates for future AD modifying therapies.
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Affiliation(s)
- Seulah Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Dahae Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Jiwon Baek
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Eun Bee Jung
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Ji Yun Baek
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Il Kyun Lee
- Research Center, Natural Medicine Research Team, Richwood Trading Company, LTD, Seoul, Republic of Korea
| | - Tae Su Jang
- Institute of Green Bio Science & Technology, Seoul National University, Pyeong Chang, Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
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Lee D, Lee S, Shim SH, Lee HJ, Choi Y, Jang TS, Kim KH, Kang KS. Protective effect of lanostane triterpenoids from the sclerotia of Poria cocos Wolf against cisplatin-induced apoptosis in LLC-PK1 cells. Bioorg Med Chem Lett 2017; 27:2881-2885. [DOI: 10.1016/j.bmcl.2017.04.084] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 04/14/2017] [Accepted: 04/26/2017] [Indexed: 10/19/2022]
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Lee J, Hwang IH, Jang TS, Na M. Isolation and Quantification of Phenolic Compounds inAcer tegmentosumby High Performance Liquid Chromatography. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11099] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- JungIn Lee
- College of Pharmacy; Chungnam National University; Daejeon 34134 Republic of Korea
| | - In Hyun Hwang
- Department of Biochemistry; UT Southwestern Medical Center; Dallas TX 75235 USA
| | - Tae Su Jang
- Institute of Green Bio Science and Technology; Seoul National University; Seoul 151-742 Republic of Korea
| | - MinKyun Na
- College of Pharmacy; Chungnam National University; Daejeon 34134 Republic of Korea
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Kang C, Han JH, Oh J, Kulkarni R, Zhou W, Ferreira D, Jang TS, Myung CS, Na M. Steroidal Alkaloids from Veratrum nigrum Enhance Glucose Uptake in Skeletal Muscle Cells. J Nat Prod 2015; 78:803-10. [PMID: 25835537 DOI: 10.1021/np501049g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Veratrum nigrum is recognized as a medicinal plant used for the treatment of hypertension, stroke, and excessive phlegm. Chemical investigation of the roots and rhizomes led to the isolation of five new steroidal alkaloids, jervine-3-yl formate (1), veramarine-3-yl formate (2), jerv-5,11-diene-3β,13β-diol (3), (1β,3β,5β)-1,3-dihydroxyjervanin-12(13)-en-11-one (4), and veratramine-3-yl acetate (5). Compounds 1 and 5 exhibited potent inhibitory activity (11.3 and 4.7 μM, respectively) against protein tyrosine phosphatase 1B (PTP1B), which has emerged as a viable target for treatment of type 2 diabetes mellitus. On the basis of their PTP1B inhibitory activity, the compounds were evaluated for their potential to enhance glucose uptake in C2C12 skeletal muscle cells. The insulin-stimulated glucose uptake was enhanced upon treatment with compounds 1 and 5 (10 μM) by 49.9 ± 6.5% and 56.0 ± 9.7%, respectively, in a more potent manner than that with the positive control rosiglitazone (47.3 ± 3.4% at 30 μM). These results suggest that steroidal alkaloids serve as practical antidiabetes mellitus leads capable of enhancing glucose uptake.
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Affiliation(s)
- ChuHyun Kang
- †College of Pharmacy, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Joo-Hui Han
- †College of Pharmacy, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Joonseok Oh
- ‡Division of Pharmacognosy, Department of BioMolecular Sciences and Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Roshan Kulkarni
- †College of Pharmacy, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Wei Zhou
- †College of Pharmacy, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Daneel Ferreira
- ‡Division of Pharmacognosy, Department of BioMolecular Sciences and Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi 38677, United States
| | - Tae Su Jang
- §Institute of Green Bio Science and Technology, Seoul National University, Seoul 151-742, Republic of Korea
| | - Chang-Seon Myung
- †College of Pharmacy, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - MinKyun Na
- †College of Pharmacy, Chungnam National University, Daejeon 305-764, Republic of Korea
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Lim TG, Jung SK, Kim JE, Kim Y, Lee HJ, Jang TS, Lee KW. NADPH oxidase is a novel target of delphinidin for the inhibition of UVB-induced MMP-1 expression in human dermal fibroblasts. Exp Dermatol 2014; 22:428-30. [PMID: 23711068 DOI: 10.1111/exd.12157] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2013] [Indexed: 01/29/2023]
Abstract
We investigated the reported antiphotoaging effects of the major anthocyanidin delphidin and sought to identify its specific molecular target during UVB-induced MMP-1 expression. Delphinidin treatment significantly inhibited UVB-induced MMP-1 expression in primary cultured human dermal fibroblasts (HDF), an effect associated with the suppression of MKK4-JNK1/2, MKK3/6-p38 and MEK-ERK1/2 phosphorylation. Further investigation revealed that delphinidin significantly inhibited UVB-induced ROS production and NOX activity. Interestingly, the inhibitory effect of delphinidin on UVB-induced NOX activity was stronger than that of apocynin, a pharmaceutical NOX inhibitor. Fractioned cell analysis results using a Western blot assay showed that this effect occurred through the inhibition of UVB-induced P47(phox) (a NOX subunit) translocation from the cytosol to the membrane. Pull down assays demonstrated that delphinidin binds directly to P47(phox) in vitro. Collectively, our results suggest that delphinidin targets NOX, resulting in the suppression of UVB-induced MMP-1 expression in human dermal fibroblasts.
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Song NR, Chung MY, Kang NJ, Seo SG, Jang TS, Lee HJ, Lee KW. Quercetin suppresses invasion and migration of H-Ras-transformed MCF10A human epithelial cells by inhibiting phosphatidylinositol 3-kinase. Food Chem 2014; 142:66-71. [DOI: 10.1016/j.foodchem.2013.07.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 05/19/2013] [Accepted: 07/01/2013] [Indexed: 12/21/2022]
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Ha DT, Oh J, Khoi NM, Dao TT, Dung LV, Do TNQ, Lee SM, Jang TS, Jeong GS, Na M. In vitro and in vivo hepatoprotective effect of ganodermanontriol against t-BHP-induced oxidative stress. J Ethnopharmacol 2013; 150:875-885. [PMID: 24140584 DOI: 10.1016/j.jep.2013.09.039] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 09/09/2013] [Accepted: 09/11/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ganoderma lucidum (Fr.) Karst. (Ganodermataceae) is a mushroom which is used as a traditional remedy in the treatment of human diseases such as hepatitis, liver disorders, hypercholesterolemia, arthritis, bronchitis and tumorigenic diseases. This study targets the evaluation of hepatoprotective activity of ganodermanontriol, a sterol isolated from Ganoderma lucidum, and the investigation of its mechanism of action in Hepa1c1c7 and murine liver cells upon tert-butyl hydroperoxide (t-BHP)-induced inflammation. t-BHP was utilized to stimulate an anti-inflammatory reaction in the hepatic cell lines and murine hepatic tissue examined. Western blot and reverse transcription-quantitative polymerase chain reaction (RT-PCR) were used to estimate the expression of ganodermanontriol (GDT)-induced proteins, including heme oxidase-1 (HO-1) and mitogen-activated protein kinases (MAPKs) as well as the corresponding mRNA. Luciferase assays were conducted to evaluate the interaction between NF-E2-related factor-2 (Nrf-2), the antioxidant response element (ARE), and the promoter region of the HO-1 gene and subsequent gene expression. Biochemical markers for hepatotoxicity were monitored to assess whether GDT protected the cells from the t-BHP-mediated oxidative stimuli. RESULTS GDT induced HO-1 expression via the activation of Nrf-2 nuclear translocation and the subsequent transcription of the HO-1 gene in vitro and in vivo, which seemed to be regulated by phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) and p38 signaling pathways. GDT exhibited in vitro and in vivo hepatoprotective activity as determined by the lowered levels of hepatic enzymes and malondialdehydes and the elevated glutathione levels. CONCLUSIONS This study validates the ethnopharmacological application of Ganoderma lucidum as a treatment for hepatic disorders. GDT induced in vitro and in vivo anti-inflammatory activity in t-BHP-damaged hepatic cells through the expression of HO-1, and in which PI3K/Akt and p38 kinases are involved. Our study motivates further research in the exploration of potent hepatoprotective agents from Ganoderma lucidum.
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Affiliation(s)
- Do Thi Ha
- National Institute of Medicinal Materials (NIMM), 3B Quangtrung, Hoankiem, Hanoi, Vietnam; College of Pharmacy, Chungnam National University, Daejeon 305-764, Republic of Korea
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Choi S, Lim TG, Hwang MK, Kim YA, Kim J, Kang NJ, Jang TS, Park JS, Yeom MH, Lee KW. Rutin inhibits B[a]PDE-induced cyclooxygenase-2 expression by targeting EGFR kinase activity. Biochem Pharmacol 2013; 86:1468-75. [DOI: 10.1016/j.bcp.2013.08.066] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 08/30/2013] [Accepted: 08/30/2013] [Indexed: 12/29/2022]
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Thuong PT, Hung TM, Khoi NM, Nhung HTM, Chinh NT, Quy NT, Jang TS, Na M. Cytotoxic and anti-tumor activities of lignans from the seeds of Vietnamese nutmeg Myristica fragrans. Arch Pharm Res 2013; 37:399-403. [DOI: 10.1007/s12272-013-0185-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 06/09/2013] [Indexed: 11/28/2022]
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Abstract
An effective design method is suggested for a flexible keel design for energy-storing prosthetic feet (ESPF). The basic, two-dimensional shape of the keel is based on anthropometric data and normal gait analysis available in the literature. Cost function is defined for the performance evaluation of the keel. Five factors and five levels of their effect on the performance of the keel are established. By use of an orthogonal array table, 25 trials of dynamic simulations of prosthetic walking are designed, from among 3,125 possible combinations, dramatically reducing the number of total simulations needed to examine sufficiently the contribution of each factor to cost function. A prosthetic walking model is built, and a dynamic simulation of prosthetic walking is performed using the finite element method. The contribution of each factor to cost function is investigated by an analysis of variance (ANOVA), and the average main effects of factors for cost function are calculated. The optimum combination of factor levels is obtained by minimisation of cost function. To examine the structural safety of the keel, the deformation and stress distribution of the keel are investigated by static analysis, and failure indices are calculated by three failure criteria. Finally, the optimum flexible keel is designed with increased energy storage capacity, without failure, and suitable for more active prosthetic walking; the recoverable strain energy stored in the optimum ESPF keel is 25.8J.
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Affiliation(s)
- T S Jang
- Department of Mechanical Engineering, Korea Advanced Institute of Science & Technology, Taejon
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